Hello,
Here are a few steps you can try to troubleshoot this issue:
- Ensure that the Remote Desktop Session Host servers are properly configured and added to the RDS deployment.
- Check if the Remote Desktop Session Host servers are reachable from the Remote Desktop Connection Broker servers.
- Verify that the Remote Desktop Session Host servers have the necessary permissions to be added to the collections.
- Check the event logs on the Remote Desktop Session Host servers for any errors or warnings that might provide more information about the issue.
- Make sure that all servers are running the latest updates and patches.
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